TRANSLATION AND VALIDATION OF A SPANISH PRELIMINARY VERSION OF THE PACKA QUESTIONNAIRE AMONG PATIENTS WITH FIBROMYALGIA

ABSTRACT Background Patients’ understanding of pain and its biopsychosocial nature is thought to be important in order to optimize treatment decisions and treatment outcomes. A validated Spanish questionnaire for patients based on a biopsychosocial model assessing knowledge and attitudes of pain was unavailable. The aim of this study is to validate the Spanish version of the PACKA, to have a Spanish questionnaire to be used among pain patients in both clinical and research settings. Methods Phase 1: forward and backward translation, and expert committee; Phase 2: a cross-sectional and longitudinal study among Fibromyalgia patients. In the cross-sectional study (n =330), internal consistency, structural validity and hypothesis testing were examined. Results The 26-item PACKA was translated and validated in 4 stages. Acceptable internal consistency and test-retest reliability was demonstrated. Internal consistency: Cronbach’s α =0.776. Hypotheses testing: associations with the Neurophysiology of Pain Questionnaire r =0.31. Conclusion This Spanish version of PACKA has shown acceptable validity and reliability in patients with Fibromyalgia. Further use and reanalysis of the questionnaire might improve this preliminary validation.